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Composition and Tissue-Specific Distribution of Stilbenoids in Grape Canes Are Affected by Downy Mildew Pressure in the Vineyard

Houillé, Benjamin, Besseau, Sébastien, Delanoue, Guillaume, Oudin, Audrey, Papon, Nicolas, Clastre, Marc, Simkin, Andrew John, Guérin, Laurence, Courdavault, Vincent, Giglioli-Guivarc’h, Nathalie, and others. (2015) Composition and Tissue-Specific Distribution of Stilbenoids in Grape Canes Are Affected by Downy Mildew Pressure in the Vineyard. Journal of Agricultural and Food Chemistry, 63 (38). pp. 8472-8477. ISSN 0021-8561. E-ISSN 1520-5118. (doi:10.1021/acs.jafc.5b02997) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:93902)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
https://doi.org/10.1021/acs.jafc.5b02997

Abstract

Grape canes are byproducts of viticulture containing valuable bioactive stilbenoids including monomers and oligomers of E-resveratrol. Although effective contents in stilbenoids are known to be highly variable, the determining factors influencing this composition remain poorly understood. As stilbenoids are locally induced defense compounds in response to phytopathogens, this study assessed the impact of downy mildew infection during the growing season on the stilbenoid composition of winter-harvested grape canes. The spatial distribution between pith, conducting tissues, and cortex of E-piceatannol, E-resveratrol, E-ε-viniferin, ampelopsin A, E-miyabenol C, Z/E-vitisin B, hopeaphenol, and isohopeaphenol in grape canes from infected vineyards was strongly altered. In conducting tissues, representing the main site of stilbenoid accumulation, E-ε-viniferin content was higher and E-resveratrol content was lower. These findings suppose that the health status in vineyards could modify the composition of stilbenoids in winter-harvested grape canes and subsequently the potential biological properties of the valuable extracts.

Item Type: Article
DOI/Identification number: 10.1021/acs.jafc.5b02997
Uncontrolled keywords: Fluorescence,Plant derived food,Plants,Phytochemistry,Infectious diseases
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > Biosciences
Depositing User: Andrew Simkin
Date Deposited: 05 May 2022 18:58 UTC
Last Modified: 17 Aug 2022 11:02 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/93902 (The current URI for this page, for reference purposes)

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